Memorandum input/output device



FIG. 1 is a perspective view of a memorandum input/output device showing our new design, with the cover in the closed position;

FIG. 2 is a top plan view thereof;

FIG. 3 is a bottom plan view thereof;

FIG. 4 is a front elevational view thereof;

FIG. 5 is a rear elevational view thereof;

FIG. 6 is a right side elevational view thereof;

FIG. 7 is a left side elevational view thereof;

FIG. 8 is a top plan view thereof with the cover open;

FIG. 9 is a front elevational view thereof with the cover open; and

FIG. 10 is a right side elevational view thereof with the cover open. 

The ornamental design for a memorandum input/output device, shown and described. 